Optimum allocation of test material for two-stage testing with an application to evaluation of soybean lines
Optimum allocation of test material for two-stage testing with an application to evaluation of soybean lines
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DOI：
10.2135/cropsci1963.0011183x000300010016x
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发表时间：
1963-01-01
期刊：
影响因子：
2.3
通讯作者：
BRIM, C. A.
中科院分区：
文献类型：
--
作者：
HANSON, W. D.;BRIM, C. A.
从样本中鉴定优良基因型的技术评价扩大到包括环境抽样和基于基因型产量在所有测试环境中的表现的利用。考虑了两阶段试验，其中所有基因型在11个环境中生长，q1比例的选择和生长在12个额外的环境中，根据它们在（1 1 + 1 2）环境中的产量选择理想的基因型。解决方案涉及对二元正态分布进行双重构造。建立了关系，并对测试程序提出了一般性建议。对于选择下的典型字符，建议每个环境复制2个。讨论了（1 + 2）分配的影响。以大豆育种试验程序为例。摘要作者：作者
Evaluation of techniques for identification of a superior genotype from a sample was extended to include the sampling of environments and the utilization of genotypic yields based on their performance in all environments tested. Two-stage testing was considered where all genotypes were grown in l 1 environments, q1 proportion selected and grown in l 2 additional environments, and the desirable genotypes selected based on their yields in the (l 1 + l 2) environments. The solution involved doubly trucating a bivariate normal distribution. Relations were developed and general recommendations for a testing procedure were made. For typical characters under selection 2 replications per environment would be recommended. The effects of (l 1 +l 2) allocation are discussed. The testing program for soybean breeding was used as a specific example. || ABSTRACT AUTHORS: Authors